Abstract
In order to calculate the processing and reduction factor between fresh and dry Welsh onion which was widely used as a dried agricultural ingredient of food in Korea. 7 pesticides such as pyridalyl, kresoxim-methyl, spinosad, flufenoxuron, difenoconazole, metconazole, and tebufenozide were tested. After 2 sites field trial conducted and measured water contents by drying at $60^{\circ}C$ and analyzed the pesticide residue. Water contents of fresh and dried Welsh onion are 89.2 and 10.2% respectively. Averages of processing factor showed 7.24 of pyridalyl, 2.85 of kresoxim-methyl, 7.43 of spinosad, 3.17 of flufenoxuron, 4.38 of difenoconazole, 2.40 of metconazole and 8.13 of tebufenozide into 2 field samples. Averages of Reduction factor showed 0.87 of pyridalyl, 0.35 of kresoxim-methyl, 0.88 of spinosad, 0.38 of flufenoxuron, 0.52 of difenoconazole, 0.29 of metconazole and 0.98 of tebufenozide. Residual amounts of pesticides in/on fresh Welsh onion reduced during drying process.
본 실험은 우리나라에서 파에 등록되어 사용중인 농약 중 pyridalyl, kresoxim-methyl, spinosad, flufenoxuron, difenoconazole, metconazole, tebufenozide를 시험농약으로 하여 건조계수와 가공계수를 구하기 위해 파에 대한 2군데 포장시험을 수행하여 $60^{\circ}C$에서 건조한 후 건조 전후 차의 수분함량을 측정하고 잔류농약을 분석하였다. 파의 평균 수분 함량은 건조 전은 89.3%, 건조 후는 10.2%이였으며, 2포장의 평균 가공계수는 pyridalyl은 7.24, kresoxim- methyl은 2.85, spinosad은 7.43, flufenoxuron은 3.17, difenoconazole은 4.38, metconazole은 2.40, tebufenozide은 8.13으로 나타났고, 2포장의 평균 감소계수는 pyridalyl은 0.87, kresoxim-methyl은 0.35, spinosad은 0.88, flufenoxuron은 0.38, difenoconazole은 0.52, metconazole은 0.29, tebufenozide 0.98로 나타나 전반적인 농약잔류량은 건조하는 과정에서 감소하는 경향이었다.
